Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-20 | 285/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.29 (744) | 28.98 (736) | -0.31 (-8) -1.1% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 92.02 (2337.34) | 91.03 (2312.21) | -0.99 (-25.13) -1.1% |
| Sidewall Height inches (mm) | 4.65 (118) | 4.49 (114) | -0.16 (-4) -3.4% |
| Revolutions per mile (km) | 688.54 (427.84) | 696.02 (432.49) | 7.48 (4.65) 1.1% |
285/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.78 mph (31.84 km/h) |
| 25 mph (40.23 km/h) | 24.73 mph (39.8 km/h) |
| 30 mph (48.28 km/h) | 29.68 mph (47.76 km/h) |
| 35 mph (56.33 km/h) | 34.62 mph (55.72 km/h) |
| 40 mph (64.37 km/h) | 39.57 mph (63.68 km/h) |
| 45 mph (72.42 km/h) | 44.52 mph (71.64 km/h) |
| 50 mph (80.47 km/h) | 49.46 mph (79.6 km/h) |
| 55 mph (88.51 km/h) | 54.41 mph (87.56 km/h) |
| 60 mph (96.56 km/h) | 59.35 mph (95.52 km/h) |
| 65 mph (104.61 km/h) | 64.3 mph (103.48 km/h) |
| 70 mph (112.65 km/h) | 69.25 mph (111.44 km/h) |
| 75 mph (120.7 km/h) | 74.19 mph (119.4 km/h) |
| 80 mph (128.75 km/h) | 79.14 mph (127.36 km/h) |
| 85 mph (136.79 km/h) | 84.09 mph (135.32 km/h) |
| 90 mph (144.84 km/h) | 89.03 mph (143.28 km/h) |
| 95 mph (152.89 km/h) | 93.98 mph (151.24 km/h) |
| 100 mph (160.93 km/h) | 98.92 mph (159.2 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | 2058 | 2216 | 2314 | 2419 | 2495 | 2578 | 2676 | 2811 | 2947 | 3098 | 3218 | 3437 | 3678 | 3867 | 3987 | 4055 | 4304 | 4650 | 5404 |
Better Fuel Economy Factory Ratios Increased Power
